Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood?
ALiver
BKidney
CBladder
DColon
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Question 482
jamb2011
The vascular tissues in higher plants are responsible for
Athe movement of food and water
Bsuction pressure
Ctranspiration pull
Dthe transport of gases and water
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Question 483
jamb2011
The movement response of a cockroach away from a light source can be described as
Apositive phototaxism
Bnegative phototaxism
Cnegative phototropism
Dpositive phototropism
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Question 484
jamb2011
The path followed by air as it passes through the lungs in mammals is
Atrachea → bronchi → bronchioles → alveoli
Bbronchi → trachea → alveoli → bronchioles
Ctrachea → bronchioles → alveoli
Dbronchioles → alveoli → bronchi →trachea
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Question 485
jamb2011
The part of the mammalian ear responsible for the maintenance of balance is the
Acochlea
Bpinna
Cperilymph
Dvestibular system
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Question 486
jamb2011
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
The enzyme involved in the hydrolysis is
Arennin
Berepsin
Csucrase
Dmaltase
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Question 487
jamb2011
Use the following information to answer the question below.
I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .
In which of the test tubes will glucose be detected after complete hydrolysis?
Al and ll only
Bll and lll only
Cl only
Dl, ll and lll
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Question 488
jamb2011
I. Parasitism → Sundew. ll. Autotrophism →Amoeba. III. Saprophytism → Alga. IV Heterotrophism → Agama.
Which of the above modes of nutrition is correctly matched with the organism that exhibits it?
All
Blll
ClV
Dl
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Question 489
jamb2011
In mammals, the exchange of nutrients and metabolic products occurs in the
Alungs
Boesophagus
Ctrachea
Dlymph
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Question 490
jamb2011
The ability of living organism to detect and respond to changes in the environment is referred to as
Alocomotion
Birritability
Cgrowth
Dtaxis
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Question 491
jamb2011
The conversion of a nutrient into a molecule in the body of a consumer is referred to as
Adigestion
Bassimilation
Cabsorption
Dinhibition
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Question 492
jamb2011
Which of the following is true of leucocytes?
Athey are respiratory pigments
Bthey are most numerous and ramify all cells
Cthey are large and nucleated
Dthey are involved in blood clotting
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Question 493
jamb2011
Which of the following can cause shrinkage of living cells?
AHypotonic solution
BIsotonic solution
CDeionized water
DHypertonic solution
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Question 494
jamb2011
An example of an endospermous seed is
Amaize gain
Bcashew nut
Ccotton seed
Dbeen seed
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Question 495
jamb2011
The adaptive importance of nuptial flight from termite colonies is to
Adisperse the reproductives in order to establish new colonies
Bprovide abundant food for birds and other animals during the early rains
Censure cross-breeding between members of one colony and another
Dexpel the reproductives so as to provide enogh food for other members
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Question 496
jamb2011
In which of the following groups of vertebrates is parental care mostly exhibited ?
AReptilia
BAmphibia
CAves
DMammalia
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Question 497
jamb2011
Seed plants are divided into
Atrachephytes and ferns
Bangiosperms and gymonsperms
Cmonocotyledons and dicotyledons
Dthallophytes and bryophytes
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Question 498
jamb2011
The function of the red head in male Agama lizards is to
Aconceal and camouflage the animal from predators
Bscare other males from the territory
Cattract female lizards for mating purposes
Dwarm predators of the distastefulness of the animal
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Question 499
jamb2010
In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?
Aiii
Bii
Ci
Div
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Question 500
jamb2010
Use the diagram above to answer this question.With respect to their decreasing dependence on aquatic conditions for reproduction, which of the following is the correct arrangement of the animals represented?
